amd64/140391: [hang] powerd(8) freezes computer on Phenom II
annona2 at gmail.com
Wed Mar 3 09:30:06 UTC 2010
The following reply was made to PR amd64/140391; it has been noted by GNATS.
From: g <annona2 at gmail.com>
To: bug-followup at FreeBSD.org, 3edcft654r5 at gmail.com
Subject: Re: amd64/140391: [hang] powerd(8) freezes computer on Phenom II
Date: Wed, 3 Mar 2010 18:02:10 +0900
I'm an author of hwpstate.c . sorry for inconvenience.
A mixture of cpufreq with acpi_throttle and hwpstate will produce very
low freq like 100MHz.
So I think there are two workaround candidates.
1) seting debug.cpufreq.lowest
seeing sysctl dev.cpu.0.freq_levels output,
do step by step setting the frequency as follows.
and at the point ZZZ where the err 6 returned,set the threshold.
2) disable acpi_throttle.
disabling acpi_throttle maybe solve this problem.
hint.acpi_throttle.0.disabled="1" in /boot/loader.conf
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